diff --git a/src/storm/models/sparse/StateLabeling.cpp b/src/storm/models/sparse/StateLabeling.cpp
index e80556108..bcb00b7a9 100644
--- a/src/storm/models/sparse/StateLabeling.cpp
+++ b/src/storm/models/sparse/StateLabeling.cpp
@@ -50,7 +50,7 @@ namespace storm {
             }
             
             void StateLabeling::addLabelToState(std::string const& label, storm::storage::sparse::state_type state) {
-                return ItemLabeling::addLabelToItem(label, state);
+                ItemLabeling::addLabelToItem(label, state);
             }
             
             bool StateLabeling::getStateHasLabel(std::string const& label, storm::storage::sparse::state_type state) const {